Gottlieb bigler



d, a m U G. BIGLER DUST coLLBcToR.

Patented Oct (No Model.)

UNITED STATES PATENT OFFICE.

corrijan Bienne, or BUFFALO, NEW YORK, Assicuou or ONE-HALF To MARY M. MfesHERnY, oF sAME PLACE.

DUST-COLLECTOR.

SPECIFICATION forming part of Lettera Patent No. 350.286, dated October 5, 1886.

Application lllecl Muy 22, 1886. Serial No. 202,955. 'No model.)

.To all whom, it may concern'.-

Beit known that I, Go'r'rLIEB BIGLER, of the city of Butialo, in the county of Erie and Stateof New York, have invented a new and useful Improvement in Dus/t -Collectors, of

'which the following is a specification.

g This invention relates to that class ot' dnstcollectors which consists of a revolving drum covered with a filtering material, by which the dust-laden air is strained or filtered, the dust being intercepted and deposited upon the covcost.

`provements, which will be hereinafter fully set which the dust-laden air passes.

forth, and pointed out in the claims. r

In the accompanying drawings,l Figure 1 is a vert-ical cross-section of my improved dnstcollector. Fig. 2. is a verticalv central section at right angles to Fig. 1. Fig. 3 is a perspective View of a portion of-the filtering material with which the rotating drum is covered.

Like letters of reference refer to like parts in the sevcraligures.

A represents the casing of the machine, and a the spout through which the dust-laden air enters the casing A. l

-B represents the revolving drum arranged within the casing A, and made somewhat smaller in diameter than the casing, so as to leave a space, b, all around the drum, through The drum B consists of two end heads or disks, C G,longitudi nal ribs or strips d, secured to the heads C C,

a iilternglcover, E, applied to the outer sides of the strips d, and outer strips, e, applied to the outer side ofthe covering E and secured to the heads C C, whereby thecovering is securelyfattached to the drum.

f f represent two collars or short tubes secured in central openings formed in the end wheads C, of the drum andproj ecting outwardly through openings g in the ends of the casing A.,

-'1he"\latter is provided with packing-rings n,

My invention consist-s, to that end, of theimbearing against the outer sides of the ri ngsf, to prevent leakage of air around the latter. f y 'i represents ribbed rings secured to the faces or peripheries of the end heads, C C, and running on grooved wheels I, whereby t-he drum is rotated.

J is a ratchet-ri ng secured to theinncr sides of the inner strips, d, centrally between the end heads, C, and l.composed of a bar, which is bent to form a series of cams, each composed of a curved or'inclined front'portion, j, which gradually approaches the axis of the drum, and a radial abrupt rear portionj, which recedes from the axis of the drum, as Aclearly represented in Fig. 1.

K represents a pivotcd kno cker,which rests upon the l'owerj portion ot' the ratchet-ring .I within the drum, and which is alternately raised by the inclined portions j of the cams and permitted to drop by the radial portions j of the same, thereby jarring the drum and dislodging the dust, &c., which adheres to the outer side of the covering E. The knockerK is pivotcd to an arm, L, which is attached at its upper end to two brackets, M, secured in the drum. The brackets M are secured with their outer ends to the heads C, and are con; nected at their inner ends by a bolt, m, arranged in the axis ofthe drum, and to which the arm L's loosely hung, so that the arm Il takes no part in the rotation of the drum, except to the extent to which it is moved by the knocker K. The latter is elevated by the ratchet-ring J, which rotates with the drum in the direction of the arrow in Fig. 1, until the angle of the cam which supports th`e knocker becomes so steep th'at the knockcr slides back by gravit-y. During this backward movement the knocker passes beyond the abrupt rear end of the cam and drops upon the cam next below, thereby jarring thedrum. 'f Itis obvious that one of the brackets M may be omitted. if desired. The material which is dislodged from the drum drops into a trough, N, formed inthe lower portion of the casing A, and is removed there- 95 from by a conveyer, n, or other suitable discharge device.

The covering E of the drum is composed of two layers, p p, of coarse gauze, and an intermediate layer, q, of nnwoven cotton or cotton roo bqttinggwhich is secured between thelayers ol' gauze by lines of stitching or seems r,whereby the cottonis prevented f rom changing its position between the layers of gauze under the jarring of the drum. This covering is very strong and pliable, and easily stretched over the strips d ofthe drum, so ns to form n tight or smooth covering, from which the dust is easily dislodged by the jarring cuused by the knocker. The unwoveu cotton forms :t permeable diaphragm, which permits of the passage ofthe nir, but intercepts the dust.

The covering constructed as uliovedescribed forms n cheap und eileient nir-filtering muterial. The dust-laden nir enters the ease A through the spout a` und deposits the dust upon the outer side of thedrum B. Thepuriied :tir passes through the covering E into the interior ot' the drum und escapes through the collars f at both endsthereof. v

1. In a dllstcolleetor, the eomblmti on,with the inclosing-cnsing A, prm'ided with'nniuletl, r spout, a, for the dust-laden nir, of n revo] ving drum composed of two heads, C C, provided with central air-escape pipes, f, longitudinal ribs d, secured-to the heads G, a covering, E,

:ipplied to theonter sides of the ribs d, nml strips e, applied to the outer side of the ,covering and secured to the heads C, substantially ns set forth.

2. In a dust-collector, the combinntiolnwiih the inclosing-euse A., provided with an inletspout, a, for the dust-laden nir, of u sepnruting;` -druln composed ol.' heads C C, provided with central nir-dischargesf, longitudinal ribs d, secured tosuid heads, und n covering, E, composed of t'wo layers, ;1, ol'guuze, nud nu inr termedinte layer, q, of un woven ooi tolnseeured ,together by seams fr, substnutixll y as set forth.

fitness my hund this 19th dny oi l\Iuv,18S(i.`

i Go'rrmm: noten.

fi tn ssesz EDWARD Winmzmr, OSCAR SeuAUn. 

